Need some help in my grow room.

Hi everyone. first time poster very long time reader. I have had quite a few sucsefull grows, but now I am in a new place, new room, new everything. here is a little info. about my room:the room is a 3x8x8 closet. my light is a 1000 mh. I have drilled a series of holes in the door and have a bathroom exauhst fan bringing air into the room. I have cut a hole in the cealing and am curently using an inline fan sucking air out of the room and exauhsting into my attic. I am growing mr. nice from clones. my room surprisingly never gets over 75 at the hottest.my question is.how can I controll smell. if anyone has grown mr. nice they know the smell gets hardcore. how can I defuse this smell...? any help is greatly appreciated and if pics will help just let me know. more than glad to do so. thank you all in advance.